Oven



R. SADWITH July 22, 1930.

OVEN

Filed April 15, 1929 2 Sheets-Sheet l lllrlilxlll INVENTOR 7? (5241M CKATTORNEY J y 1930. R. SADWITH 1,771,145

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Filed April 15 1929 2 Sheets-Sheet 2 INVENT O R ATTORNEY Patented July22, 1930 UNITED STATES PATENT OFFICE RYAN SADWITH, OF NEWARK NEW JERSEY,ASSIGNOR TO NICHOLS PRODUCTS (203- I PORATION, OF -HIGHLAND PARK, NEWJERSEY, A CORPORATION OF NEW JERSEY OVEN Application filed April 15,1929. Serial No. 355,883.

This invention relates to ovens.

In the case of ovens of relative large size or length the constructionbecomes important. The oven must be of sufiicient strength to render theproper service and yet must be of such a structure as to be efficient.In manufacturing plants it may become desirable to change the locationof the oven and therefore the oven should be of such construction m asto be capable of easy removal and re-erection.

Une of the objects of this invention is to provide an oven that can beeasily and cheaply erected and one that will permit of disassembly andeasy removal and ready re-erection. Another object of the invention isto provide an entirely new type of structure which will give the properstrength and rigidity with relatively light weight. A furao ther objectof the invention is to eliminate structural construction. A furtherobject of the invention is to form the oven from panels which are unitsnot exceeding such size as will not permit of buckling under the heat.

A further object of the invention is to provide an oven wherein thepanels are interlocked, supported and sealed by posts. A

further object of the invenion is to provide an oven wherein the panelsand posts are made of sheet metal filled with heat insulating material.Still another object of the invention is to provide with the aid ofstrengthening members the required rigidity and strength to the sheetmetal posts and panels in order to eliminate structural members. Afurther object of the invention is to reduce heat losses by heattransmission or radiation from the interior.

Referring to the drawings:

Figure 1 is a view. in elevation of a portion of an assembled ovenembodying the principles of my invention.

Figure 2 is a view in side elevation of a portion of an oven of twopanels in height.

Figure 3 is a cross section of Figure 1 along the line 3, 3, looking inthe direction of the arrows.

Figure 4 is a broken detail view partly in section showing thearrangement of the verti- 50 cal and horizontal posts, in Figure 3.

Figure 5 is a sectional view along the line 5, 5, looking in thedirection of the arrows of Figure 4.

the vertical post inserted between.

Figure 7 is a top plan view of a single panel.

Figure 8 is a view in elevation, parts broken off and parts in sectionof a single panel along the line 8, 8, of Figure 7 looking in thedirection of the arrows.

Figure 9 is a sectional View of Figure 8 along the line 9, 9, looking inthe direction of the arrows.

Figure 10 is a sectional view along the line 10, 10, of Figure 8 lookingin the direction of the arrows.

Figure 11 is a sectional view of a portion of a post along the line 11,11, of Figure 12 looking in the direction of the arrows.

Figure 12 is a top plan view of a post.

Figure 13 is a sectional view of Figure 11 along the line 13 looking inthe direction of the arrows.

Figure 14: is'a detail view of the 2 bar Figure 6 is a top View of twopanels with spacing strips 4 is preferably by welding although they maybe secured in any other well known manner. Spacing strips 4 furtherfunction to retain the heat insulating material and by reason of theirreduced area reduce the losses due to. heat transference from the insidewall 2 to the outside wall 2'. '7

Secured to the sides of each panel 1-, adjacent the ends arestrengthening 2 members 5, 5,

the walls 2, 2', being bent around the outside edge of the Z members 5,5. Spacing strips 6 join the Z members 5, 5', and function identically,as spacing strips 4. The Z members 5, 5, at the top and bottom arenotched as shown in Figure 14 to permit of the horizontal post abuttingthe vertical posts for strengthening purposes. The posts 7 have asomewhat similar c nst uction. They are formed of two channels 7 7", searated by spacers 8 which are likewise wel ed preferably to the exteriorof the corresponding legs of each channel comprising the post 7 to forma post 7 as shown in top plan view in Figure 12. The vertical posts 7may contain a stifiening angle 9 therein which angle can be utilized tosecure the post to the supports of the oven and furnishes an element towhich conveyors 14 or other machinery within the oven may be secured andsupported. Such an arrangement of supporting the machinery within theoven is advantageous as the usual method of securing the same to thepanels causes buckling and distortion of the panels unless specialstructural elements are built into the panels, which latter increasesthe cost.

In assembly the posts 7 are erected and bolted to the base 13 as shownin Figure 1, and the panels 1 are slid down between the posts 7, theside of each panel 1 covering half of the post so that the edges of eachpanel abut the edges of the adjacent panel.

It will thus be seen that the posts 7 oper- "ate as an interlockingelement as well as a supporting element and of course as it is filledwith heat insulating material also has the same function as the panel 1in retaining the heat within the oven. In an oven of tiers of panels 1horizontal posts 7 are inserted between the rows of panels 1, that is,at the top of the lower panel 1 and the bottom of the upper panel 1.When it is desired to build any oven of several tiers of panels 1 thevertical posts 7 extend throughout the height of the tiers and lend therequired strength and rigidity to the structure. The horizontal postsform the interlocking means to prevent buckling and furnish a properbearing surface for the panel 1 above. It will thus be seen that such astructure is adaptable to variation in the design of ovens and that theerection cost is very small in comparison to the structural type ofoven. The use of the Z bar strengthening members 5, 5, in the panels 1is also of considerable importance not only to render support incompression but also to. furnish sufiicient strength and rigidity sothat the edges of the panels 1 will not readily become bent out of shapeand thereby permit leakage of heat from within the oven around the posts7 or leakage of dust into the oven in the same manner to the detrimentof the articles under process.

In the case of an oven using only one height of panels 1 the channelspace formed by angles 3, 3, and spacers 4 is filled with heatinsulating material retained in place and sealed by sealer strips andangles 12 whilein the case of an oven using tiers of panels 1 the bottomof the bottom row and the top of the top row are likewise packed andsealed.

Variations in details might be made in the construction of the posts andpanels and still fall Within the scope of my invention.

It will thus be seen that I have invented a form of oven that can easilybe erected or readily disassembled and re-erected and one which willhave the proper strength and rigidity although of relatively lightweight and which can be manufactured in units for assembly for diverstypes of ovens and which can be constructed with the minimum of erectionlabor costs.

What I claim is:

1. An oven the walls thereof formed of metal panels, hollow posts ofsheet metal supporting each panel, said posts of unit. constructionindependent of the panels adapted for interlocking each panel and meansfor preventin the transfer of the heat through said pane s and posts.

2. An oven formed of sheet metal panels, each of said panels having aninner and an outer wall of sheet metal, sheet metal angles secured atthe top and bottom of the inner and outer wall of each panel, spacerstrips secured to said sheet metal angles to maintain the inner andouter wall in spaced relationship, strengthening bars of Z cross sectionsecured to the two side edges of both the inner and outer wall of eachpanel, spacer strips secured to the two strengthening bars Z crosssection of each side to maintain the inner and outer wall in spacedrelationship, a heat insulating filler between said inner and outerwalls of each panel and maintained in position by said sheet metalangles, strengthening bars of 2 cross section and spacer strips andposts independently constructed from said panels and adapted to supportand interlock said panels.

3. An oven formed of panel units, each panel unit having an inner and anouter wall of sheet metal, means for maintaining said inner and outerwall in spaced relationship, heat insulating material between said innerand outer wall, strengthening bars of 2 cross section secured to the twoside edges of both the inner and outer wall of each unit to form achannel, each panel unit abutting the adjacent panel units on each sideand having the channels forming a chamber to receive a supporting andinterlocking post and a supporting post of built up sheet metalindependent of the panels having heat insulating material thereinfitting in said chamber.

4. In an oven formed of panel units, horizontal and vertical sheet metalposts to seal, interlock and support the panels and of independentconstruction therefrom, said posts formed from two pieces of sheet metalbent into channel shape, spacer strips secured to the corresponding armsof each of said channels to maintain the channels in spacedrelationship.

5. In an oven formed of panel units, verti cal posts to seal, supportand interlock thepanels, said posts built up of sheet metal independentlconstructed from the panels, means for eat insulating said posts, meansfor reducing the transfer of heat from the inside wall of the post tothe outside wall and a vertical stiffening angle through said post tosecure machinery within the oven and to secure the post to thefoundation.

6. An oven formed of tiers of panel units, each of said panel unitsformed of sheet metal, means for heat insulating the inner wall of eachpanel from the outer wall of the same panel, said panels having channelsat their top, bottom and sides to receive posts,

horizontal and vertical posts of sheet metal independentl constructedfrom the panels to seal, interloc: and support said panel units andmeans for heat insulating said posts.

7. An oven formed of tiers of panels units each of said panel unitshaving means for heat insulating the inner wall of each panel from theouter wall of the same panel, said panels having corresponding channelsin their top, bottom and sides, said channels when adjacent panels abutforming cham-= 'bers to receive posts, hollow posts to interlock, sealand support said panels both vertically and horizontally in saidchambers, said posts independently constructed and separable from saidpanels, and means for heat insulating-said posts.

8. An oven formed of panel units, each of said panel units having meansfor heat insulating the inner Wall of each panel from the outer Wall ofthe same panel, said panels having corresponding channels in theirsides, said channels when adjacent panels abut forming chambers toreceive posts, hollow posts to interlock, seal and support said panels,said posts of separate construction from said panels and extendingvertically the height of the oven.

9. An oven formed of tiers of panel units each of said panel unitsformed of sheet metal walls and having means for heat insuiating theinner wall from the outer wall, horizontal means for interlocking,sealing and supporting said panels between and within the abutting panelunits, vertical means for interlocking, sealing and sup orting saidpanels between and within the a utting anel units, said vertical meansfor interloc'ing, sealin and supporting said panels extending foralftiers of panels.

10. In an oven, panels therefor formed in units of standard size, saidpanels formed of sheet metal plates, sheet metal angles, spacer stripsand strengthening bars of 2 cross sections, said plates connected byspacer strips of sheet metal at the top and bottom to said sheet metalangles secured to said plates, said spacer strips connected at the sidesto said strengthening bars of Z cross section, the edges of the sides ofsaid plates 'and support said panels both vertically and horizontally insaid chambers, the vertical posts extending the full height of the tiersand the horizontal posts extendin. the width of a panel between saidvertical posts, said horizontal posts abutting said vertical posts.

Signed at New York, in the county of New York and State of New York,this 4th day of April, A. D. 1929.

' RYAN SADWITH.

